Conducted immunity is done up to 80 MHz in place of radiated immunity. It is difficult to generate a uniform field at lower frequencies in the space available in a typical lab with reasonable power requirements for the amplifier. As to why the break point for radiated emissions is 30 MHz? To quote Tevye, “Tradition!”
Ghery S. Pettit From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, March 09, 2010 7:13 AM To: [email protected] Subject: Radiated Immunity Can someone tell me why the Radiated Immunity testing is conducted from 80 Mhz to 2 Ghz while Radiated Emissions is conducted from 30 Mhz to 1 Ghz (or 5th harmonic), i.e. why the gap from 30 Mhz to 80 Mhz for Immunity? Robert Hanson - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
